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This you see as the north pole forming near the north pole of the solenoid. Like poles repel, unlike poles attract is kind of a misleading analogy(I find it strange that I realized this after reading your question). What actually is happening is that the tiny magnetic dipoles inside the magnetic material(a bar of iron, for example) align with the direction of the magnetic field.
The north pole is normally shown as N and the south pole as S. Magnets are made from magnetic materials. These are metals that can be magnetised or will be attracted to a magnet. Most materials are not magnetic, but iron, cobalt and nickel are magnetic. Steel is mostly iron, so steel is magnetic too. Attract and repel. If you bring two bar magnets together, there are two things that can happen: 1  if you bring a north pole and a south pole together, they attract and the magnets may stick together. 2  if you bring two north poles together, or two south poles together, they repel and the magnets push each other away.